Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
050026goodexcellent51excellent
040025goodexcellent51excellent
030029goodexcellent51excellent
020026goodexcellent41excellent
010028goodexcellent41excellent
000024goodexcellent41excellent
230021goodexcellent41excellent
220022goodexcellent41excellent
210020goodexcellent31excellent
200016goodexcellent21excellent
190011excellentexcellent21excellent
180011excellentexcellent21excellent
17008excellentexcellent21excellent
160010excellentexcellent11excellent
150035goodexcellent31excellent
140016goodexcellent31excellent
130017goodexcellent31excellent
120021goodexcellent41excellent
110021goodexcellent41excellent
100021goodexcellent41excellent
090020goodexcellent41excellent
080020goodexcellent31excellent
070022goodexcellent41excellent
060026goodexcellent41excellent